The Public Works Authority (Ashghal) is contributing to the development of Qatar with the construction of first class, sustainable infrastructure with a high degree of public acceptance by utilizing best international practices. Pumping stations and wastewater treatment plants are traditionally constructed at the outskirts of the cities, as they are generally associated with odour nuisance. However, as the cities are expanded, the facilities become part of the urban fabric and their operation becomes an issue of concern for the citizens. To address this public concern, Ashghal has adopted for its sewer infrastructure, pumping stations and treatment plants for their plants including the under construction, Wakrah-Wukair Drainage Tunnel (WWDT), odour emission limits of 0.5ppb of hydrogen sulphide (H2S) and 0.5 ouE/m3 of odour concentration, which are lower than recognisable levels by humans. Moreover, on the way to FIFA World Cup Qatar 2022™, Ashghal decided to install environmentally friendly and sustainable biological treatment units followed by activated carbon filters to ensure a nuisance-free environment at the existing Doha South Sewage Treatment Works (DS-STW) and the new Doha South Terminal Pump Station (TPS) and to extract and treat air from the tunnels of the recently commissioned Doha South Sewer Infrastructure Project (DSSIP). This paper will present methodologies for determining odour levels in existing and new units, the available odour treatment technologies, and the selected treatment schemes for the above projects.